#include<stdio.h>
int main( )
{
    long ge,shi,qian,wan,x;
    printf("Please input x:");
    scanf("%ld",&x);
    wan=x/10000;
    qian=x%10000/1000;
    shi=x%100/10;
    ge=x%10;
    if(ge==wan && shi==qian)
        { printf("this number is a huiwen\n");}
    else
        {printf("this number is not a huiwen\n");}
    return 0;
}